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I have 2 carrier thermostat like this, 6-7 years old
Hi I have 2 carrier thermostat like this https://www.shareddocs.com/hvac/docs/1009/Public/02/OMUIZ-3CA.pdf … read more
Twa252842
Twa252842
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Vocational, Technical or Trade School
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I have a Honeywell TH9421C1004 thermostat with a three wire
I have a Honeywell TH9421C1004 thermostat with a three wire thermostat wire coming from the Trane furnace Honeywell THM5421C EIM. I would like to update to a Smart Thermostat, specifically the ecobee … read more
Daniel Plourde
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EXOBEE TO REPLACE CARRIER THERMOSTAT THAT HAS ZONES AND
i AM INSTALLING EXOBEE TO REPLACE CARRIER THERMOSTAT THAT HAS ZONES AND DAMPERS, iNSTAEAD OF y, g, bL, bLACK IT HAS -V, RS-, rs AND VG … read more
Cliff
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I have a Carrier Comfort Zone II system that is about 18
I have a Carrier Comfort Zone II system that is about 18 years old. It has three zones. It is heatpump with dual fuel propane. I told my service provider that I wanted to upgrade to something newer so… read more
Bill
Bill
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This is an HVAC electrical question. My home has two zones
This is an HVAC electrical question. My home has two zones that share a boiler but have separate condensers and air handlers. (The boiler sends hot water to the two air handlers, and the fan turns on … read more
Rick
Rick
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I would like to have zone cooling and heating with an older
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Michael Ferryman
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We purchased house with the Lennox air handler on the 2nd
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airheatman
airheatman
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Attempting to replace my downstairs (main level) thermostat
Attempting to replace my downstairs (main level) thermostat with a Nest. I have wires on O&B but do not have a heat pump. Cannot find anywhere that this scenario would be possible. I do have a humidif… read more
BillyHvac
BillyHvac
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I currently have same problem you talked about 4 years ago.
I currently have same problem you talked about 4 years ago. heater heats upstairs but not down stairs everything is the same except board has been replaced still same problem now what?… read more
airheatman
airheatman
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I have an American Standard communicating thermostat with 3
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Phil
Phil
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have two themostats one in bedroom another in living room have
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Rick
Rick
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I HAVE A CARRIER INFINITY THERMOSTAT WITH abcd WIRING, GREEN,BLUE WHITE
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BillyHvac
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I need to install a thermostat sensor in one part of the house
I need to install a thermostat sensor in one part of the house (different zone on forced hot-water baseboard boiler system) to be controlled in a section of the house that is on the other zone with it… read more
Rick
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I have a Honewell Aquastat L8148 A 1009 that is on a HydroTherm
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jrloar
jrloar
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I recently had a 95% efficient Rheem natural gas furnace installed,
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Douglas
Douglas
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I have a renovated townhouse in a 125yr old building, with
I have a renovated townhouse in a 125yr old building, with insulation and thermo pane windows,. First floor; 3 rooms, open floor plan. Second floor; 3 bedrooms & bath. For numerous reasons, location o… read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a 4 zone Honeywell system with prestige HD thermostats.
I have a 4 zone Honeywell system with prestige HD thermostats. I am interested in the truesteam humidifier, but am not sure if it would work well with multiple zones. The reason I ask is this product … read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
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I am an HVAC svc tech. Had a Troltemp 3 zone operating intermittently.
I am an HVAC svc tech. Had a Troltemp 3 zone operating intermittently. Found possible cause: thermostats being used were using common off terminal for common on the tstats zone labeled M1. The thermos… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
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Rick Mather

Rick Mather

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35 years experience, HVAC

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Matthew

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Tom

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A-1 Tech

A-1 Tech

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Jerry

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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